Task1 plpgsql

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diff --git a/challenge-194/luca-ferrari/postgresql/ch-1.sql b/challenge-194/luca-ferrari/postgresql/ch-1.sql
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+++ b/challenge-194/luca-ferrari/postgresql/ch-1.sql
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+-- Perl Weekly Challenge 194
+-- Task 1
+
+CREATE SCHEMA IF NOT EXISTS pwc194;
+
+CREATE OR REPLACE FUNCTION
+pwc194.task1_plpgsql( what text )
+RETURNS int
+AS $CODE$
+DECLARE
+	needle char;
+	idx    int := 0;
+	prev   char;
+BEGIN
+	FOREACH needle IN ARRAY regexp_match( what, '^([\d?])([\d?]):([\d?])([\d?])$' ) LOOP
+	     IF needle <> '?' THEN
+	        idx := idx + 1;
+		prev := needle;
+	        CONTINUE;
+            END IF;
+
+		IF idx = 0 THEN
+		   RETURN 2;
+		ELSEIF idx = 1 THEN
+		    IF prev = '2' THEN
+		       RETURN 3;
+		    ELSE
+		      RETURN 9;
+		    END IF;
+		ELSEIF idx = 2 THEN
+		     RETURN 5;
+		ELSE
+		    RETURN 9;
+		END IF;
+	END LOOP;
+RETURN NULL;
+END
+$CODE$
+LANGUAGE plpgsql;